Previously, metadata mutations were made by the picker directly, which meant that they would be applied even if the channel winds up discarding the pick due to the returned subchannel having been disconnected by the time the pick result is returned. This changes the API such that pickers return metadata mutations along with the pick result, so that the mutations won't get applied unless the pick result is actually used.
Closes#36968
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36968 from markdroth:lb_metadata_api 2765da6121
PiperOrigin-RevId: 645451869
This change brings up the direct channel, and inproc promise based transports.
This work exposed a bug that was very difficult to fix with the current call_filters.cc implementation, so I've substantially revamped that - instead of having a pipe-like object per call element, we now have a big ol' combined state machine for the entire call. It's a touch more code, but substantially easier to reason about individual cases, so I much prefer this form (it's also a slight memory improvement: 12 bytes total to track call state, and 10 of those are wakeup bitmasks...).
Closes#36734
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36734 from ctiller:transport-refs-9 3e2a80b40d
PiperOrigin-RevId: 644034593
Change was created by the release automation script. See go/grpc-release.
Closes#36892
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36892 from XuanWang-Amos:bump_dev_version_202406112301 9b2898d716
PiperOrigin-RevId: 643027546
Also made some minor improvements to the `ConfigSelector` API.
Closes#36877
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36877 from markdroth:client_channel_v3_dynamic_filters 6a539fe320
PiperOrigin-RevId: 642755276
Change was created by the release automation script. See go/grpc-release.
Closes#36887
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36887 from XuanWang-Amos:bump_core_version_202406111526 5df15650dd
PiperOrigin-RevId: 642358496
All TraceFlags are now configured in `src/core/lib/debug/trace_flags.yaml`. The format is:
```
my_flag:
default: false # the default value; default=false
description: Some Description
debug_only: false # debug_only flags only work in debug builds; default=false
internal: false # internal flags will not show up in documentation; default=false
```
To regenerate the trace flag source code, run `tools/codegen/core/gen_trace_flags.py` (requires mako). This script is also run when sanity checking.
This PR also adds two new features:
### Glob-based flag configuration
Trace flag configuration now supports `?` (single wildcard character) and `*` (one or more wildcard characters). For example, using `GRPC_TRACE='event_engine*'` will enable all flags that match that glob. It expands to:
* event_engine
* event_engine_client_channel_resolver
* event_engine_dns
* event_engine_endpoint
* event_engine_endpoint_data
* event_engine_poller
### A cleaner trace-logging macro in abseil logging format
If your goal is only to add log statements when the `fault_injection_filter` trace flag is enabled, you can use the macro:
```
GRPC_TRACE_LOG(fault_injection, INFO) << "Filtered:" << 42;
```
When the trace flag is enabled, the the log will show something like this:
```
I0000 00:00:1715733657.430042 16 file.cc:174] Filtered:42
```
----
Note: just like with the gpr_log to abseil logging conversion, the pre-existing trace logging usages can be replaced with the new tracing macro across multiple PRs.
Closes#36576
PiperOrigin-RevId: 641295215
Also rename the class from `MetadataQuery` to `GcpMetadataQuery`.
Closes#36789
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36789 from markdroth:reorg_gcp_metadata_query d2b84f46be
PiperOrigin-RevId: 639256546
The following attributes were completely unused:
- kOffset
- kIndex
- kSize
- kFilename
- kKey
- kValue
The following attributes were added but never programmatically accessed, and I've moved them into the status messages themselves, which is another step toward #22883:
- kErrorNo
- kTsiCode
- kWsaError
- kHttpStatus
- kOsError
- kSyscall
- kTargetAddress
- kRawBytes
- kTsiError
Closes#36523
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36523 from markdroth:grpc_error_attribute_cleanup b289c399fe
PiperOrigin-RevId: 639147583
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Closes#36509
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36509 from ctiller:transport-refs-3 2771a2b0e1
PiperOrigin-RevId: 633240374
Change was created by the release automation script. See go/grpc-release.
Closes#36544
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36544 from yashykt:bump_dev_version_202405061956 69ee5c869e
PiperOrigin-RevId: 631187829
Also begin to eliminate `CallContext` in favor of just exposing `Call` - ultimately there's not really a need to introduce two types here, so I'm going to wind that idea back over a few PRs.
I've avoided making this an experiment as the changes required were quite structural.
Closes#36477
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36477 from ctiller:deadline-time 9856eeebe6
PiperOrigin-RevId: 629599230
[grpc][Gpr_To_Absl_Logging] Migrating from gpr to absl logging GPR_ASSERT
Replacing GPR_ASSERT with absl CHECK.
These changes have been made using string replacement and regex.
Will not be replacing all instances of CHECK with CHECK_EQ , CHECK_NE etc because there are too many callsites. Only ones which are doable using very simple regex with least chance of failure will be replaced.
Given that we have 5000+ instances of GPR_ASSERT to edit, Doing it manually is too much work for both the author and reviewer.
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Closes#36466
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36466 from tanvi-jagtap:tjagtap_src_core_lob_event_engine d101d5f701
PiperOrigin-RevId: 629105415
Introduce the interception chain type.
Also introduces the real call-v3 call spine based atop CallFilters.
Closes#36414
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36414 from ctiller:interception-chain 90c8e96973
PiperOrigin-RevId: 627784183
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Closes#36333
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36333 from yijiem:bump_dev_version_202404101721 0a7cc5b4b7
PiperOrigin-RevId: 623878150
Change was created by the release automation script. See go/grpc-release.
Closes#36293
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36293 from yijiem:bump_core_version_202404081658 b306ec1e69
PiperOrigin-RevId: 623338846
This paves the way for removing `GetEndpoint()` from the transport API, which is a prereq for removing `grpc_endpoint_shutdown()`.
Closes#36237
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36237 from markdroth:endpoint_filter_cleanup_rbac 46a41400e0
PiperOrigin-RevId: 621537397
This was a concept that I thought we'd need, but as work has continued it's clear that the right api is CallDestination (or variants thereof)
Closes#36226
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36226 from ctiller:call_factory c30a893f3a
PiperOrigin-RevId: 621255162
Also addressing a TODO from previous PRs where `authority` is not being populated in the `ChannelScope`.
Closes#36189
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36189 from yashykt:OTelChannelScope e76f9ce0ca
PiperOrigin-RevId: 621231764
It looks like we're settling on moving this functionality into the channel itself - so removing the filter makes sense (especially since it had some significant bugs)
Closes#36213
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36213 from ctiller:x-ex 3040dcec95
PiperOrigin-RevId: 620996358
Remove rolled out experiments v3_compression_filter, v3_server_auth_filter; Extend WIP v3_channel_idle_filter for a bit, and extend work_serializer_clears_time_cache until OSS issues with work_serializer_dispatch are resolved.
Closes#36166
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36166 from ctiller:updat3 2c7223f63b
PiperOrigin-RevId: 619057925
Mark D. Roth
Craig Tiller
Xuan Wang
AJ Heller
gRPC Team Bot
Yash Tibrewal
Tanvi Jagtap
Yijie Ma
Esun Kim
Vignesh Babu